inscribed and dated 'Mary Yellow Nr 2 Blue 6 7 8 9 10 100920. Progressive studies_positive NR 4 11' lower centre; further signed and dated 'Olafur Eliasson 2011' on the reverse

watercolour and pencil on paper

30.9 x 40.6 cm (12 1/8 x 15 7/8 in.)

Executed in 2011.